Here is the full list of all 47 Resident Evil 0 achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Finish the game on Hard difficulty.
Put on Team Wesker costume.
Change into a costume.
Kill 50 enemies with the Death Stare at full charge.
Collect all of only one color of Leech Charms.
Defeat Mimicry Marcus for the first time only using a knife.
Combine every type of herb with each other.
Finish the game without combining herbs.
Finish the game without using a First-Aid Spray.
Finish the game without using a recovery item (including Green Chemicals).
Defeat all bosses except Centurion using Rebecca.
Read all files.
Obtain all weapons.
Finish the game without saving.
Create a Molotov Cocktail.
Obtain all keys and use them all.
Finish Leech Hunter with rank E or above.
Finish Leech Hunter with rank A.
Defeat all enemies in Leech Hunter.
Defeat Mimicry Marcus with a Molotov Cocktail or a Napalm Grenade.
Play Leech Hunter.
Finish the game with rank S.
Defeat a zombie by stomping on them.
Complete the treatment plant.
Defeat Queen Leech.
Defeat the Proto Tyrant.
Complete the factory.
Fight off the Proto Tyrant.
Complete the laboratory.
Defeat Infected Bat.
Defeat 16 bats in the church.
Get picked up by the Infected Bat.
Complete the training facility.
Defeat an enemy by burning them.
Play the piano using Rebecca.
Shoot down a Hunter or an Eliminator while they are jump attacking in the air.
Create a Custom Handgun.
Use a Green Chemical.
Destroy a zombie's legs.
Attack an enemy to save your partner who is grappling with that enemy.
Try to push something heavy with Rebecca.
Defeat Centurion.
Complete the train.
Defeat an enemy with a critical-hit headshot.
Defeat Stinger.
Defeat an enemy with a knife.
Break free of a Cerberus while they are biting you or trying to push you down.